package com.xing.dao;

import com.xing.domain.User;

/*
 * 静，谦虚谨慎，心胸宽广容纳所有好的坏的、先苦后甜
 * day38web2
 * 2021/4/28 15:10
 */
public interface UserDao {
    void insert(User user);

    User selectByUserAndPassword(String username,String password);

    boolean selectByUserName(String username);
}
